2 * Copyright (c) 2001-2002, David Janssens
3 * Copyright (c) 2003, Yannick Verschueren
4 * Copyright (c) 2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
32 static unsigned char *cio_start, *cio_end, *cio_bp;
34 extern jmp_buf j2k_error;
37 /// Number of bytes written.
40 return cio_bp-cio_start;
44 /// Get position in byte stream.
47 return cio_bp-cio_start;
51 /// Set position in byte stream.
53 void cio_seek(int pos) {
58 /// Number of bytes left before the end of the stream.
60 int cio_numbytesleft() {
61 return cio_end-cio_bp;
65 /// Get pointer to the current position in the stream.
67 unsigned char *cio_getbp() {
72 /// Initialize byte IO.
74 void cio_init(unsigned char *bp, int len) {
83 void cio_byteout(unsigned char v) {
84 if (cio_bp>=cio_end) longjmp(j2k_error, 1);
92 unsigned char cio_bytein() {
93 if (cio_bp>=cio_end) longjmp(j2k_error, 1);
100 //void cio_write(unsigned int v, int n) {
101 void cio_write(long long v, int n) {
103 for (i=n-1; i>=0; i--)
105 cio_byteout((unsigned char)((v>>(i<<3))&0xff));
112 /* unsigned int cio_read(int n) { */
113 long long cio_read(int n) {
118 for (i=n-1; i>=0; i--) {
119 v+=cio_bytein()<<(i<<3);
125 /// Write some bytes.
127 void cio_skip(int n) {